JP2023085930A - Fitting structure of ceiling and partition wall - Google Patents

Abstract

To provide a fitting structure of a ceiling and a partition wall that can sufficiently exhibit a vibration suppression effect of the ceiling expected from a dynamic damper and can effectively reduce a floor impact sound transmitted to the ceiling, by ensuring a free vibration of the ceiling and its structural members, on fitting of the ceiling and the partition wall where the partition wall is erected below the ceiling.SOLUTION: There is provided a fitting structure 80A of a ceiling 10 including a ceiling backing material 11 and ceiling surface materials 15, 16 fixed to its undersurface, and a partition wall 60 erected below the ceiling 10. A surface facing a ceiling space of the ceiling 10 is mounted with dynamic dampers 20. The partition wall 60 penetrates the ceiling 10 suspended through a suspending jig 40 from a beam 30.SELECTED DRAWING: Figure 3

Description

The present invention relates to a fitting structure for a ceiling and a partition wall.

The floor impact sound of the upper floor of the building is transmitted to the ceiling of the lower floor through the floor of the upper floor, and the ceiling of the lower floor is excited and radiated to the lower floor. This floor impact sound includes heavy floor impact sound and light floor impact sound.

A dynamic damper may be installed on the surface of the ceiling facing the ceiling space in order to reduce floor impact noise from the upper floor. A dynamic damper has a mass body (weight) and an elastic body (spring), and is installed on the ceiling while being tuned to the natural frequency of the entire ceiling, the ceiling base material or ceiling surface material that constitutes the ceiling. By vibrating the dynamic damper instead of the ceiling, the vibration of each component of the ceiling can be suppressed.

By the way, when a partition wall is erected below the ceiling and a part of the ceiling is supported by the partition wall from below, the ceiling and its structure when the floor impact sound acts on the ceiling due to restraint by the partition wall Free vibration of the members is less likely to occur. In this case, the frequency of the ceiling and its constituent members generally increases beyond the natural frequency during free vibration, and the frequency of the tuned dynamic damper deviates from the frequency of the ceiling and its constituent members. , leading to a reduction in the vibration suppression effect of the ceiling by the dynamic damper.

From the above, it is expected that the dynamic damper will have the effect of suppressing ceiling vibration by ensuring free vibration of the ceiling and its constituent members when the ceiling and partition walls are installed under the ceiling. A fitting structure for the ceiling and partition wall that fully demonstrates the

Here, Patent Literature 1 proposes a ceiling structure for a building that can suppress floor impact noise. Specifically, a plurality of first joist support (3 ) ... and a plurality of second joist receivers (4) arranged substantially parallel to the first joist receivers (3) ... without being suspended and supported by the floor beam materials (1) ... ..., a plurality of joists (5) attached so as to be substantially orthogonal to the first and second joist receivers (3) (4) ..., and these joists (5) ... Equipped with a ceiling plate (8) attached to the lower side, and only the second joist support (4) among the first and second joist supports (3) (4) . . . heavy floor impact noise A dynamic damper (30) for reduction is pre-installed, and several types of second joist supports (4) with different lengths are arranged while being selectively combined according to the shape and size of the ceiling surface. It is

JP 2012-12829 A

Since the ceiling structure of the building described in Patent Document 1 does not assume restraint by the partition wall erected below the ceiling, a part of the ceiling is restrained by the partition wall from below, Due to the fact that free vibrations of the ceiling and its constituent members are less likely to occur, it is difficult to prevent the dynamic damper from reducing the vibration suppression effect of the ceiling.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems. To provide a fitting structure of a ceiling and a partition wall, capable of sufficiently exhibiting the effect of suppressing vibration of the ceiling expected in a ceiling and effectively reducing floor impact noise propagated to the ceiling. there is

In order to achieve the above object, one aspect of the ceiling and partition wall fitting structure according to the present invention is as follows:
A structure comprising a ceiling having a ceiling base material and a ceiling surface material fixed to the lower surface thereof, and a partition wall erected below the ceiling,
A dynamic damper is installed on the surface of the ceiling facing the ceiling space,
The partition wall is characterized by penetrating the ceiling suspended from the beam via a hanging jig.

According to this aspect, the ceiling is restrained by the partition wall from below by having a so-called partition wall configuration in which the partition wall penetrates the ceiling suspended from the beam via the hanging jig. and the free vibration of the ceiling and its components can be guaranteed. This eliminates the divergence between the frequency of the dynamic damper, which is tuned to the natural frequency of the entire ceiling and its constituent members (ceiling base material, ceiling surface material, etc.) and the vibration frequency of the ceiling and its constituent members. , the effect of suppressing the vibration of the ceiling by the dynamic damper can be sufficiently exhibited, and the floor impact noise propagated to the ceiling can be effectively reduced.

The upper end of the partition wall penetrating the ceiling is fixed to, for example, a beam in the ceiling space, and the end on the side of the partition wall of the ceiling is suspended via a hanging jig fixed to the beam, whereby the partition wall The upper end of the partition wall and the end of the ceiling, which are separated from each other, can maintain a stable posture. Here, between the partition wall and the edge of the ceiling, there may be a form with no gap or a form with a clearance of, for example, several mm. preferred from

In addition, another aspect of the fitting structure of the ceiling and the partition wall according to the present invention is
A structure comprising a ceiling having a ceiling base material and a ceiling surface material fixed to the lower surface thereof, and a partition wall erected below the ceiling,
A dynamic damper is installed on the surface of the ceiling facing the ceiling space,
An upper runner having a U-shaped cross section, which includes an upper piece and hanging pieces extending downward from the left and right ends of the upper piece, is installed on the ceiling panel material,
The partition wall is fixed to the hanging piece with a clearance between the partition wall and the upper piece.

According to this aspect, in a so-called ceiling construction, in which the partition wall is fixed to the upper runner installed on the ceiling panel, the partition wall has a clearance between the partition wall and the upper piece that constitutes the upper runner. is fixed to the hanging piece that constitutes the upper runner in a state of having Free vibration of the member can be guaranteed. This eliminates the divergence between the frequency of the dynamic damper, which is tuned to the natural frequency of the entire ceiling and its constituent members, and the vibration frequency of the ceiling and its constituent members. It is possible to effectively reduce the floor impact sound propagated to the ceiling.

Even though there is a clearance between the upper piece that constitutes the upper runner fixed to the ceiling and the upper end of the partition wall, the partition wall is fixed to the hanging piece that constitutes the upper runner, so that the ceiling is lowered downward. A stable posture above the partition wall can be maintained without being pushed up (restricted) by the partition wall. Here, as the clearance between the upper end of the partition wall and the upper piece forming the upper runner, a clearance of several millimeters to ten and several millimeters can be set.

Further, in another aspect of the ceiling and partition wall fitting structure according to the present invention,
The partition wall comprises a stud and a partition panel,
The stud is arranged inside the upper runner, and the partition surface material is arranged on the outer side of the left and right hanging pieces,
Both the stud and the partition panel are fixed to the hanging piece with the clearance between them and the upper piece.

According to this aspect, both the studs constituting the partition wall and the partition surface material have a clearance with the upper piece constituting the upper runner fixed to the ceiling, and the hanging piece constituting the upper runner. Even though there is a clearance between the upper piece that constitutes the upper runner fixed to the ceiling and the upper end of the partition wall, both the stud and the partition panel maintain a stable upward position. can do.

Further, in another aspect of the ceiling and partition wall fitting structure according to the present invention,
The area on the outer wall side of the ceiling is suspended from the trunk via a hanging jig,
The end surface of the ceiling on the outer wall side is in contact with the inner surface of the outer wall.

According to this aspect, the area of the ceiling on the outer wall side hangs down from the trunk via the hanging jig, and the end face of the ceiling on the outer wall side is in contact with the inner surface of the outer wall. Both are not restrained, and free vibration of the ceiling and its constituent members can be more effectively guaranteed.

As can be understood from the above description, according to the ceiling and partition wall arrangement structure of the present invention, by ensuring free vibration of the ceiling and its constituent members, the effect of suppressing the vibration of the ceiling, which is expected from the dynamic damper, is sufficiently achieved. It is possible to effectively reduce the floor impact sound propagated to the ceiling.

FIG. 2 is a longitudinal sectional view of an example of a fitting structure of a ceiling and a partition wall according to the first embodiment; FIG. 4 is a vertical cross-sectional view of an example of a fitting structure of a ceiling and an outer wall; FIG. 11 is a vertical cross-sectional view of an example of a fitting structure of a ceiling and a partition wall according to a second embodiment;

Hereinafter, the fitting structure of the ceiling and the partition wall according to each embodiment will be described with reference to the accompanying drawings. In addition, in the present specification and drawings, substantially the same components may be denoted by the same reference numerals, thereby omitting duplicate descriptions.

[Settling structure of ceiling and partition wall according to the first embodiment]
First, with reference to FIG. 1, an example of a structure for fitting a ceiling and a partition wall according to the first embodiment will be described. Here, FIG. 1 is a vertical cross-sectional view of an example of the fitting structure of the ceiling and the partition wall according to the first embodiment.

The ceiling and partition wall fitting structure 80 is a so-called ceiling fitting fitting structure in which the partition wall 60 is attached below the ceiling 10 extending in the horizontal direction.

The ceiling 10 has a ceiling base material 11 (ceiling base panel frame) and two ceiling surface materials 15 and 16 .

The ceiling base material 11 is composed of a plurality of ceiling joists 12 formed of channel steel with a lip made of lightweight steel, and a plurality of ceiling joist receivers 13 similarly formed of channel steel made of a lightweight steel frame. be. A plurality of joists 12 are arranged at predetermined intervals so that their longitudinal directions are parallel to each other, and a plurality of joist receivers 13 are arranged parallel to each other in such a manner that their longitudinal directions are orthogonal to the joists 12. They are arranged at predetermined intervals in such a manner that they are aligned, and are fixed to the ceiling joists with fixing means such as screws (not shown). The ceiling base panel frame 11 may be a ceiling base which is assembled at a factory, transported to a site and installed as it is, or may be assembled at the site. Here, the ceiling base material 11 may be a light iron ceiling base material, or a wooden ceiling base material formed by assembling wooden crosspieces in a grid pattern.

Both of the ceiling panels 15 and 16 are made of gypsum board or the like, and the ceiling 10 (ceiling panel) is formed by attaching the ceiling panels 15 and 16 to the ceiling base material 11 with drilled tapping screws or the like. Although the ceiling panel may be formed of one panel, having two panels improves the soundproof performance of the ceiling. A cloth (not shown) is further attached to the lower surface of the ceiling surface material 16 , and a soundproof material 36 such as rock wool is placed above the ceiling base material 11 at the site.

The floor beam 30 is made of H-shaped steel, and a fireproof covering material 35 is provided around the floor beam 30 . A hanging jig 40 is fixed to the end of the lower flange 31 of the floor beam 80 .

The hanging jig 40 has an L-shaped gripping piece 41a in side view, a Z-shaped gripping piece 41b in side view, a leaf spring 42 (anti-vibration means) fixed to the gripping piece 41b, and fixed to the leaf spring 42. It has a suspension bolt 43 and a support member 44 suspended from the suspension bolt 43, and each component is formed of a metal member (metal plate, steel bolt, etc.).

By gripping the ends of the lower flange 31 with the two gripping pieces 41a and 41b, the hanging jig 40 is fixed to the lower flange 31, and the support member 44 supports the ceiling joist receiver 13 of the ceiling base material 11. Thus, the ceiling 10 is suspended and fixed to the floor beam 30 via the suspension jig 40 .

A plurality of dynamic dampers 20 are installed on the upper surface of the ceiling panel 15 (the surface facing the ceiling space). The dynamic damper 20 is formed of a metal mass body 21 and a synthetic rubber elastic body 22 that elastically supports the mass body 21 . The dynamic damper 20 is tuned to vibrate in synchronism with the vibrations of the ceiling 10 and the ceiling base material 11 and ceiling surface materials 15 and 16 that constitute the ceiling 10 .

An upper runner 51 is fixed to the lower surface of the ceiling panel 16 by fixing means such as screws (not shown), and a lower runner 52 is similarly attached to a floor 55 such as a foundation at a position corresponding to the upper runner 51 by screws or the like. is fixed by The upper runner 51 and the lower runner 52 are formed of channel steel having a U-shaped cross section, for example.

The partition wall 60 has a steel stud 61 and partition surface members 62 arranged on both sides thereof. A partition surface member 62 is provided on both outer side surfaces of the member 52, and both the stud 61 and the partition surface member 62 are fixed to the upper runner 51 and the lower runner 52 with screws or the like. Here, the partition surface material 62 is formed of a gypsum board or the like.

The upper runner 51 has an upper piece 51a and two hanging pieces 51b on the left and right sides of the upper piece 51a, and the lower runner 52 has substantially the same configuration.

The stud 61 is fixed to the hanging piece 51b with a clearance C1 of height t1 between the upper end of the stud 61 and the upper piece 51a of the upper runner 51. As shown in FIG. On the other hand, the partition panel 62 is fixed to the hanging piece 51b with a clearance C2 of height t2 between its upper end and the lower surface of the ceiling panel 16 (not shown cloth attached to it). ing.

Here, the height t1 is set to 10 mm, for example, in the range of several millimeters to ten-odd millimeters, and the height t2 is set to about several millimeters, for example, 2 mm so as not to come in contact with the cloth.

According to the fitting structure 80, the partition wall 60 constitutes the upper runner 51 in a so-called ceiling construction, in which the partition wall 60 is fixed to the upper runner 51 installed on the ceiling panel 16. Since it is fixed to the hanging piece 51b that constitutes the upper runner 51 while having clearances C1 and C2 between it and the piece 51a, the ceiling 10 is attached to the partition wall from below even though it has a ceiling structure. 60 is no longer constrained. As a result, it is possible to ensure free vibration in the X1 direction, which is the vertical direction, of the ceiling 10 and its constituent members such as the ceiling base material 11 and the ceiling surface materials 15 and 16 .

Since the free vibration of the ceiling 10 is guaranteed, the vibration frequency of the dynamic damper 20 tuned to the natural frequency of the ceiling 10 and the constituent members of the ceiling 10 does not deviate from the vibration frequency of the ceiling 10 and its constituent members. Therefore, the effect of suppressing vibration of the ceiling 10 by the dynamic damper 20 can be fully exhibited, and the floor impact sound propagated to the ceiling 10 can be effectively reduced.

Next, with reference to FIG. 2, an example of the fitting structure of the ceiling and the outer wall will be described. Here, FIG. 2 is a vertical cross-sectional view of an example of the fitting structure of the ceiling and the outer wall.

The illustrated fitting structure 90 of the ceiling and the outer wall is a fitting structure in which the ceiling 10 is fixed via the hanging jig 45 from the trunk 30A between the lower floor (for example, the first floor) and the upper floor (for example, the second floor). be.

The lower floor outer wall panel 70A includes, for example, an outer wall surface material 71 (exterior material), a heat insulating board 72 such as polystyrene foam, a heat insulating board 73 such as a glass wool board, an outer wall frame 74, and an outer wall frame 74 inside the outer wall frame 74. and a filled insulation material 75 such as glass wool to be filled. On the other hand, the outer wall panel 70B on the upper floor has the same structure as the outer wall panel 70A on the lower floor, and FIG. The configuration of these outer wall panels 70A and 70B is an example, and there are various forms.

A part of the lower flange 31 of H-shaped steel forming the trunk 30A overlaps the outer wall frame 74, and a hanging jig 45 is fixed to the other part of the lower flange 31. is fixed.

A cross beam 76 is attached to the indoor side near the upper end of the outer wall frame 74 of the outer wall panel 70A on the lower floor. attached to the side. An inner wall surface material 78 such as a reinforced gypsum board is provided on the interior side surface of the base hardware 37, and the inner wall surface material 78 is fixed to the horizontal beam 76 by fixing means (not shown) such as screws. . In this specification, the inner wall material 78 is also included as part of the outer wall component.

In the fitting structure 90 of the illustrated example, the base hardware 14 constituting the ceiling base material 11 is fixed to the hanging jig 45 fixed to the trunk insert 30A, and the end surfaces 15a of the two ceiling surface materials 15 and 16 are fixed. , 16a have a so-called inner wall construction in which they are brought into contact with the upper part of the interior side surface of the inner wall member 78 . Here, in the illustrated example, in order to improve fireproof performance and soundproof performance, a fireproof coating material 35 formed of rock wool or the like is filled around the trunk 30A, and rock wool or the like is filled above the ceiling base material 11. It is filled with sound insulation 36 to be formed.

In the fitting structure 90 shown in FIG. 2, the end surfaces 15a and 16a of the two ceiling panels 15 and 16 are in contact with the interior side surface of the inner wall panel 78. , 16 are not supported from below by the inner wall surface material 78, the X2 direction, which is the vertical direction, is not supported in the area on the outer wall side of the ceiling 10, the ceiling base material 11 and the ceiling surface materials 15 and 16, which are components of the ceiling 10. of free vibration can be guaranteed.

In this way, by ensuring free vibration in the area of the ceiling 10 and its constituent members on the outer wall side, together with the interior structure 80 shown in FIG. can do. As a result, the vibration suppression effect of the dynamic damper 20 can be sufficiently exhibited over the entire area of the ceiling 10, and floor impact noise propagated over the entire area of the ceiling 10 can be effectively reduced.

[Fixed structure of ceiling and partition wall according to the second embodiment]
Next, with reference to FIG. 3, an example of a structure for fitting the ceiling and the partition wall according to the second embodiment will be described. Here, FIG. 3 is a vertical cross-sectional view of an example of the fitting structure of the ceiling and the partition wall according to the second embodiment.

The ceiling and partition wall fitting structure 80A is different from the fitting structure 80 in that the partition wall 60 penetrates the horizontally extending ceiling 10, which is a so-called partition wall fitting structure.

A hanging jig 46 is fixed to the lower flange 31 of the floor beam 30 , and an upper runner 51 is fixed to the hanging jig 46 . The stud 61 is fixed to the hanging piece 51b with a clearance C1 between the upper end of the stud 61 and the upper piece 51a of the upper runner 51. As shown in FIG. On the other hand, the partition surface member 62 is fixed to the hanging piece 51b with a clearance C2 between the upper end thereof and the hanging jig 46. As shown in FIG. Furthermore, a clearance C3 is provided between the end surface 10a of the ceiling 10 and the partition surface member 62. As shown in FIG. Here, the clearance C3 is set to approximately several millimeters (for example, 2 mm), which is approximately the same width as the clearance C2.

Although illustration is omitted, the ceiling 10 is supported by a suspension jig 40 or the like fixed to the lower flange 31 of the floor beam 30, for example, in the same manner as in FIG. hanging down.

According to the fitting structure 80A, in a so-called partition wall configuration in which the partition wall 60 penetrates the ceiling 10, the partition wall 60 is positioned between the upper piece 51a constituting the upper runner 51 and the hanging jig 46. The ceiling 10 is fixed to the hanging piece 51b constituting the upper runner 51 with the clearance C1, C2 and the clearance C3 between the ceiling 10 and the partition wall 60 from below. Since the ceiling 10 and its constituent members such as the ceiling base material 11 and the ceiling surface materials 15 and 16 are free to vibrate in the X1 direction, which is the vertical direction, the free vibration can be guaranteed. As a result, the vibration frequency of the dynamic damper 20, which is tuned to the natural frequency of the ceiling 10 and the components of the ceiling 10, is eliminated from the vibration frequency of the ceiling 10 and its components. The vibration suppressing effect of 10 can be sufficiently exhibited, and the floor impact noise propagated to the ceiling 10 can be effectively reduced.

Here, in the fitting structure 80A as well, by further applying the fitting structure 90 shown in FIG. The vibration suppression effect of 20 can be sufficiently exhibited, and the floor impact sound propagated over the entire area of the ceiling 10 can be effectively reduced.

[Floor impact sound measurement test and its results]
The present inventors set three rooms, A room, B room, and C room. As shown in the figure, an experiment was conducted to verify the effect of each dynamic damper in a fitting structure (example) in which the ceiling is not constrained by partition walls. In this experiment, unlike the structure shown in FIG. 2, the structure of the outer wall side of the ceiling was a ceiling structure in which the ceiling was constrained from below by the inner wall material. Experimental results are shown in Table 1 below.

From Table 1, it is verified that in all three rooms, A, B, and C, the vibration reduction effect of the dynamic damper can be added by releasing the restraint by the partition wall on the ceiling.

In addition, it can be assumed that in a small room that is susceptible to restraint by an outer wall or a partition wall, the vibration reduction effect tends to be added up.

It should be noted that other embodiments may be possible in which other components are combined with the configurations described in the above embodiments, and the present invention is not limited to the configurations shown here. Regarding this point, it is possible to change without departing from the gist of the present invention, and it can be determined appropriately according to the application form.

10: Ceiling 10a: End surface 11: Ceiling base material (Ceiling base panel frame)
12: Ceiling 13: Ceiling receiver 14: Base metal 15: First surface material (ceiling surface material)
15a: end surface 16: second surface material (ceiling surface material)
16a: end surface 20: dynamic damper 21: mass body 22: elastic body 30: beam (floor beam)
30A: Beam (strut)
31: Lower flange 35: Fireproof coating material 36: Soundproof material 37: Base hardware 40: Hanging jig 41a: Grasping piece 41b: Grasping piece 42: Leaf spring 43: Suspension bolt 44: Support material 45: Suspension jig 46: Suspension Jig 51: Upper runner 51a: Upper piece 51b: Hanging piece 52: Lower runner 55: Floor 60: Partition wall 61: Stud 62: Partition surface material 70: External wall panel (outer wall)
71: Exterior wall surface material 72, 73: Insulation board 74: Exterior wall frame 75: Filling insulation material 76: Crosspiece (wall base material)
78: Interior wall material 80, 80A: Fitting structure of ceiling and partition wall (fitting structure)
90: Fitting structure of ceiling and outer wall (inner wall material) (fitting structure)

Claims (4)

A structure comprising a ceiling having a ceiling base material and a ceiling surface material fixed to the lower surface thereof, and a partition wall erected below the ceiling,
A dynamic damper is installed on the surface of the ceiling facing the ceiling space,
1. A fitting structure of a ceiling and a partition wall, characterized in that the partition wall penetrates the ceiling suspended from a beam via a hanging jig. A structure comprising a ceiling having a ceiling base material and a ceiling surface material fixed to the lower surface thereof, and a partition wall erected below the ceiling,
A dynamic damper is installed on the surface of the ceiling facing the ceiling space,
An upper runner having a U-shaped cross section, which includes an upper piece and hanging pieces extending downward from the left and right ends of the upper piece, is installed on the ceiling panel material,
A structure for fitting a ceiling and a partition wall, wherein the partition wall is fixed to the hanging piece with a clearance between the partition wall and the upper piece. The partition wall comprises a stud and a partition panel,
The stud is arranged inside the upper runner, and the partition surface material is arranged on the outer side of the left and right hanging pieces,
3. The ceiling and partition wall according to claim 2, wherein both the stud and the partition panel are fixed to the hanging piece with the clearance between them and the upper piece. Fitting structure. The area on the outer wall side of the ceiling is suspended from the trunk via a hanging jig,
4. A fitting structure of a ceiling and a partition wall according to claim 1, wherein the end surface of the ceiling on the outer wall side is in contact with the inner surface of the outer wall.

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